Who gives a flying flip at a rolling donut if someone drafts them on a commute anyway?
I make the assumption that you're out to have a good ride and maybe get some exercise in. Does anyone really care if the guy behind you is doing less work? There's no danged finish line, no prize for getting to work sooner than the other dude (who's likely not going the same place). Team tactics don't apply on any normal commute.
That said, I don't suck wheel on my commutes, simply because I'm a raging fattie and need the extra 30% of work one puts in when not in a draft.